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mmap the config file using GMappedFile. Let's see how well this works...

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2005-09-28  Sven Neumann  <sven@gimp.org>

	* libgimpconfig/gimpscanner.c (gimp_scanner_new_file): mmap the
	config file using GMappedFile. Let's see how well this works...
This commit is contained in:
Sven Neumann 2005-09-28 18:48:42 +00:00 committed by Sven Neumann
parent fdc8ed7f57
commit 19656be202
2 changed files with 30 additions and 42 deletions
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5
ChangeLog
View file

@ -1,3 +1,8 @@
2005-09-28 Sven Neumann <sven@gimp.org>
* libgimpconfig/gimpscanner.c (gimp_scanner_new_file): mmap the
config file using GMappedFile. Let's see how well this works...
2005-08-28 Kevin Cozens <kcozens@cvs.gnome.org>
* plug-ins/script-fu/scripts/chrome-it.scm: Removed extraneous -

67
libgimpconfig/gimpscanner.c
View file

@ -25,20 +25,8 @@
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#include <glib-object.h>
#include <glib/gstdio.h>
#ifdef G_OS_WIN32
#include <io.h>
#endif
#include "libgimpbase/gimpbase.h"
#include "libgimpcolor/gimpcolor.h"
@ -52,16 +40,16 @@
typedef struct
{
gint fd;
gchar *name;
GError **error;
gchar *name;
GMappedFile *file;
GError **error;
} GimpScannerData;
/* local function prototypes */
static GScanner * gimp_scanner_new (const gchar *name,
gint fd,
GMappedFile *file,
GError **error);
static void gimp_scanner_message (GScanner *scanner,
gchar *message,
@ -83,34 +71,33 @@ GScanner *
gimp_scanner_new_file (const gchar *filename,
GError **error)
{
GScanner *scanner;
gint fd;
GScanner *scanner;
GMappedFile *file;
g_return_val_if_fail (filename != NULL, NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
fd = g_open (filename, O_RDONLY, 0);
file = g_mapped_file_new (filename, FALSE, error);
if (fd == -1)
if (! file)
{
GimpConfigError code;
code = (errno == ENOENT ?
GIMP_CONFIG_ERROR_OPEN_ENOENT : GIMP_CONFIG_ERROR_OPEN);
g_set_error (error, GIMP_CONFIG_ERROR, code,
_("Could not open '%s' for reading: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
if (error)
{
(*error)->domain = GIMP_CONFIG_ERROR;
(*error)->code = ((*error)->code == G_FILE_ERROR_NOENT ?
GIMP_CONFIG_ERROR_OPEN_ENOENT :
GIMP_CONFIG_ERROR_OPEN);
}
return NULL;
}
/* gimp_scanner_new() takes a "name" for the scanner, not a filename. Thus
* do convert to UTF-8.
*/
scanner = gimp_scanner_new (gimp_filename_to_utf8 (filename), fd, error);
/* gimp_scanner_new() takes a "name" for the scanner, not a filename */
scanner = gimp_scanner_new (gimp_filename_to_utf8 (filename), file, error);
g_scanner_input_file (scanner, fd);
g_scanner_input_text (scanner,
g_mapped_file_get_contents (file),
g_mapped_file_get_length (file));
return scanner;
}
@ -138,7 +125,7 @@ gimp_scanner_new_string (const gchar *text,
if (text_len < 0)
text_len = strlen (text);
scanner = gimp_scanner_new (NULL, -1, error);
scanner = gimp_scanner_new (NULL, NULL, error);
g_scanner_input_text (scanner, text, text_len);
@ -147,7 +134,7 @@ gimp_scanner_new_string (const gchar *text,
static GScanner *
gimp_scanner_new (const gchar *name,
gint fd,
GMappedFile *file,
GError **error)
{
GScanner *scanner;
@ -158,7 +145,7 @@ gimp_scanner_new (const gchar *name,
data = g_new0 (GimpScannerData, 1);
data->name = g_strdup (name);
data->fd = fd;
data->file = file;
data->error = error;
scanner->user_data = data;
@ -189,12 +176,8 @@ gimp_scanner_destroy (GScanner *scanner)
data = scanner->user_data;
if (data->fd > 0)
{
if (close (data->fd))
g_warning ("%s: could not close file descriptor: %s",
G_STRFUNC, g_strerror (errno));
}
if (data->file)
g_mapped_file_free (data->file);
g_free (data->name);
g_free (data);